Locking stud type molding fastener



2 Sheets-Sheet l W A BEDFORD JR LOCKING STUD TYPE MOLDING FASTENER WlLLlAM A. BEDF'ORD JR.

July 7, 1953 Flled Dec 9 1947 y 7, 1953 w. A. BEDFORD, JR 2,644,213

' I LOCKING STUD TYPE MOLDING F ASTENER Filed Dec. 9, 1947' 2 Sheets-Sheet 2 FIG 6.

IIIII I IIIIIIII WILLIAM A. BEDFoR JR mfm i Patented July 7, 1953 LOCKING STUD TYPE MOLDING FASTENER William A. Bedford, Jr., North S'cituate, Mass., assignor to United-Carr Fastener Corporation, Cambridge, Mass, a corporation of Massachusetts Application December 9, 1947, Serial No. 790,668

2 Claims.

The present invention relates to fasteners, and more particularly to fasteners for securing moldings and the like to an apertured support, and aims generally to improve existing fasteners of that type.

' One of the primary objects of the invention is the provision of an improved fastener adapted to be quickly and securely attached to an apertured support and over which a molding may be quickly pressed.

A further'object of the invention is the provision of an improved two-part fastener adapted to be secured to a flexible apertured hard surfaced support, which in final assembly with a molding will provide an efficient, simple and water-resistant fastener.

Other aims and objects of the invention will be apparent to persons skilled in the art from a consideration of the accompanying drawings and annexed specification illustrating and describing a preferred embodiment of the invention.

In the drawings:

Fig. 1 is a plan view of a molding-secured installation, partly broken away to illustrate the fastener: V

I Fig. 2 is a transverse sectional view as taken on the line 2-2 of Fig. 1; i

Fig. 3 is a plan view of the molding fastener shown in Fig. 1;

Fig. 4 is a central sectional view of the molding fastener as taken on the line 4-4 of Fig. 3;

Fig. 5 is an elevation of the locking stud;

Fig. 6 is a top plan view of the locking stud shown in'Fig. 5;

Fig. 7 is a sectional view of the locking stud mounted in unlocked position in the molding fastener, only a portion of which is shown;

Fig. 8 is a sectional view taken at right angles to that of Fig. '7 showing the stud retaining means on the molding fastener;

Fig. 9 is a sectional view similar'to that of Fig. 7 showing the stud in locked position; and Y Fig-l is a perspective view of the molding fastener shown in Figs. 3 and 4.

' Referring to the drawings, the improved fastener is preferably made in two parts comprising a locking stud and'a molding fastener III, the stud servin to lock'the fastener to, an apertured support I.

The'support I is provided with an aperture 2 and may be of any desired -material. Because of the secure locking engagement provided by the locking stud 5, the support may be of a flexible hard surfaced material, for example metal or plastic.

The molding fastener I0 is preferably in the form of a plate of sheet material, for example sheet metal, having a substantially flat body portion II of relatively large area adapted to make flush-tight surface contact with a face of the support I to which it is attached. Preferably the body I I may be formed with integral transverse reinforcing ribs I2 adjacent opposite sides thereof to add stiffness to the plate body I I and insure maximum surface contact with the support I.

The plate body II has an aperture within the marginal edges as at I3, adapted to align with the aperture 2 in the support I and to receive the locking stud '5 hereinafter described. The plate preferably has a series of relatively long resilient stud-engaging tongues I4 extending angularly beyond a face thereof, anda series of shorter stud-retaining tongues I8.

As herein illustrated, the stud-engaging tongues I4 are a pair-of diametrically opposed tongues although it will be apparent that a greater number may be provided if desired' The tongues are integrally joined to the. plate body I I outwardly of the edge of the aperture I3 by slits I5. The tongues extend substantially at right angles to the plate II for a distance greater than the thickness of a support I to which the fastener is to be attached, and the terminals ends thereof are inwardly curved toward each other as shown at I6.

The stud-retaining tongues I8 are similarly integrally connected to the plate body I I and are disposed intermediate the tongues I4 within the aperture I3. These tongues I8 extend generally toward the center of the aperture I3 substantially in the plane of the body I I.

The plate is secured to the support I by means of a separate locking stud member 5 passed through the aligned apertures I3 and 2 of the plate II and support I, respectively. This stud 5 advantageously may be formed of a single piece of sheet material, for example, metal having a base portion 6, a tubular shank portion 1 normal thereto terminating in a bulbous head 8. The

diameter of the bulbous head 8 is greater than the normal distance between the inturned ends I6 of the opposed tongues I4 and the ends of the opposed tongues I8, but the diameter of the shank portion I is less than the distance between the ends of the opposed tongues I8. Consequent- 15!, when the head 8 is forced through the openings I3 by the opposed tongues I8, the head 8 will stop at inturned ends I6 of the opposed tongues I I and as a result the stud member 5 will be retained loosely assembled in the aperture I3 to the molding fastener II] by the tongues I8. The angularly extending tongues I4 of the molding fastener I0 to which the stud member 5 has been loosely assembled as above may be inserted through the aperture 2 of the support I so that the plate II rests on the support I. Pressure may be applied to the stud member 5 forcing the base portion 6 against the plate I I and the head 8 between the inturned ends I5 of tongues I4 thereby forcing the tongues I4 apart so that they grip the sides of the aperture 2 securing the plate I I against the support I. v The head 8 passes between the inturned ends I6 so that they rest on the shank I or the rounded part of bulbous portion 8 adjacent to the shank I effectively locking the stud member 5 in position. The base portion 6 having been forced up against the plate I I and the stud locked in position will act to close substantially the openings I3 and 2 so that the molding and fastener installation is water resistant.

The plate 1 0 serves as a molding fastener and is provided withv molding-engaging fastener means, preferably formed on opposed edges thereof, for example the end edges of the plate. Advantageously, the molding fastener means may comprise an outwardly and inwardly curled flange on one edge of the plate and an outwardly curved flange ill on the opposite edge of the plate, both of suflicient depth and curvature to conform approximately to thecross-sectiona1 shape of the sides of the molding to be secured. By providing the flanges 20 and 2| with outwardly divergent portions22 and 23 respectively and flange 20 with an inwardly converging portion 24, the opposed edges of a molding may be snapped over the fastener edges of the plate.

Preferably, the fastener flange 29 is slit inwardly from opposite sides to provide anchoring tabs 25 (Fig. 10) under which anedge of the molding may be positioned and held tightly against the support I.

The molding 28 maybe of any desirable form or'construction, and usually comprises a channelshaped member having inwardly turned flanges 21 along opposite edges.

il nus'e, the molding fastener Ifl with the stud member 5 already loosely assembled with it as described above is applied tothe support I with the aperture I3 thereof and the stud member aligning with the support aperture 2 and the locking tongues I4 extending therein, The head 8 of the stud 5 is then forced through the inturned ends I6 forcing the tongues I4 radially and causing them to grip and bind against the support I, the stud locking in position as described above.

When a plurality of such plates II] have thus been attached to the support, the molding 26 may be attached thereto by hooking one inturned edge 2! under the fastener flange 2| and snappingthe opposite edge 27 over the fastener flange 20 of 'the plate I0, the resilience of the metal of the molding permitting slight expansion of the flanges 21 to be snapped over the fastener.

"It will be seeen that the construction is simple and may be quickly and easily applied in molding-secured installations.

While'I have illustrated and described a pre-,

ferred construction embodying the invention, I do not intend to be restricted thereto as the 4 scope of the invention is best defined in the appended claims.

I claim: 1. In a fastening device for attachment to an apertured support, a base plate having anlaperture, support-engaging fingers depending from opposite side edges of said aperture substantially normal to said plate, the outer ends of the fingers extending angularly toward each other, studretaining projections extending inwardly from opposite side edges of said aperture intermediate said support-engaging fingers generally in the plane of said plate, and a locking stud member having a base, a neck portion extending from said base, and an enlarged head on the end of said neck portion. opposite said base provided with shoulders adjacent said neck portion spaced from the base a distance substantially equal to the length of the support-engagin fingers, said locking stud member being received within the aperture in the base plate with the neck thereof extending between the support-engaging fingers, the shoulders on the locking stud being engaged by said outer ends of the support-engaging fingers, whereby the locking stud is retained in permanent assembly with the base plate and the support-engaging fingers are spread outwardly of said stud to engage a support.

2. In a fastening device for attachin a part to an apertured support, an attaching stud assembly comprising, a base plate having an aperture, a plurality of resilient fingers disposed at circumferentially spaced points on the edges of said aperture, normally depending substantiallynormal to said plate, and having their outer ends extending angularly toward each other, re

silient projections extending inwardly from cir cumferentially spaced points on the edges of said.

aperture intermediate said fingers and disposed generally in the plane of said plate, and a locking stud member having a base flange, a neck portion extending from said base flange, and an enlarged head on the end of said neck portion opposite said base flange providedwith shoulders adjacent said neck portion spaced from the base a distance substantially equal to'the length of the support-engaging fingers, said. base flange being disposed adjacent a face of said base plate opposite' said fingers, said neck portion extending.

through said base plate aperture between the support-engaging fingers, the shoulders on the locking stud being engaged by said outer endsof I the support-engaging fingers, whereby the looking stud is retained in permanent assembly with.

the base plate and the support-engaging fingers are spread outwardly of said stud to engage a support.

WILLIAM A. BELDFORD, JR.

References Cited the file of this patent UNITED STATES PATENTS Number Brown Sept. 28, 1943 Allen Julyv 22, 194-? Del Camp May 11,1943 

